Remove flake check action

Author: Rixxc

.github/workflows/amd64-linux-main-deploy-nix.yml

@@ -16,7 +16,6 @@ jobs:
         uses: actions/checkout@v4
 
       - uses: DeterminateSystems/magic-nix-cache-action@v4
-      - uses: DeterminateSystems/flake-checker-action@v4
 
       - name: enter nix shell
         run: nix --experimental-features 'nix-command flakes' develop